Molding device for plastic product processing

Abstract

The invention discloses a molding device for plastic product processing, and relates to the technical field of plastic processing, the molding device comprises a cabinet body, a machine tool is arranged at the top of the cabinet body, an injection molding device is arranged in the machine tool, a plurality of supporting frames are arranged at the top of the machine tool, and a material pressing device is arranged at the top of the machine tool; a feeding hopper is fixedly installed at the tops of the multiple supporting frames, a connecting pipe is fixedly installed at the bottom of the feeding hopper and fixedly penetrates through the inner wall and the outer wall of the machine tool, the feeding hopper communicates with the injection molding device through the connecting pipe, a top cover is fixedly installed at the top of the feeding hopper, and a mixing bin is fixedly installed at the bottom of the top cover; and a servo motor is fixedly mounted at the top of the top cover, raw materials are extruded to the bottom when flowing into the connecting pipe, the situation that the raw materials cannot effectively flow into the injection molding device due to the light weight of the raw materials is prevented, and the stability of the device during operation is improved.

Description

Technical Field

[0001] The invention relates to the technical field of plastic processing, in particular to a molding device used for processing plastic products. Background Art

[0002] The molding device used for plastic product processing is usually called an "injection mold" or "plastic mold". It is a specially designed and manufactured tool used to heat the plastic material to a molten state, then inject it into the mold cavity, cool it and shape it, and finally obtain a plastic product of the desired shape.

[0003] The patent with the patent announcement number CN220129336U relates to a pressure-stabilizing molding device. Its technical solution includes a mounting frame, a movable mold, a barrel, a hydraulic cylinder and an oil tank. The upper end of the mounting frame is provided with symmetrically distributed cylinders, the mounting frame is provided with a movable mold, the upper end of the movable mold is provided with a barrel, the upper end of the barrel is provided with a hydraulic cylinder, the upper end and lower end of the hydraulic cylinder are provided with oil pipes 1 and 2, the upper end of the mounting frame is provided with an oil tank, the upper end of the oil tank is provided with a pressure pump, the oil tank is provided with a heating rod, and one end of the oil tank is provided with a semiconductor cooling plate. This patent realizes the stability of the oil pressure of the hydraulic oil system of the injection molding machine, ensures the injection pressure, improves the product yield, relies on the heating rod and controls the heating temperature of the heating rod to avoid the corrosion of the heating rod, and increases the initial operating oil temperature, monitors the oil product, replaces the hydraulic oil in real time, ensures the stability of the internal pressure of the injection molding machine, and improves the working condition yield.

[0004] In the above patent, the heating rod is relied on and the heating temperature of the heating rod is controlled to avoid the rust of the heating rod, and the initial operating oil temperature is increased, the oil quality is monitored, and the hydraulic oil is replaced in real time to ensure the stability of the internal pressure of the injection molding machine and improve the working yield. However, when injecting plastic, it is necessary to continuously inject raw materials into the injection molding device. Since the raw materials are light in weight, the lack of auxiliary feeding will be affected during processing, affecting production efficiency. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a molding device for processing plastic products, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a molding device for processing plastic products, comprising a cabinet, a machine tool is arranged on the top of the cabinet, an injection molding device is arranged inside the machine tool, a plurality of support frames are arranged on the top of the machine tool, a material pressing device is arranged on the top of the machine tool, a feed hopper is fixedly installed on the top of the plurality of support frames, a connecting pipe is fixedly installed on the bottom of the feed hopper, the connecting pipe is fixedly installed through the inner and outer walls of the machine tool, the feed hopper is connected with the injection molding device through the connecting pipe, a top cover is fixedly installed on the top of the feed hopper, a mixing bin is fixedly installed on the bottom of the top cover, a servo motor is fixedly installed on the top of the top cover, the output end of the servo motor rotates through the inner and outer walls of the top cover, a screw is fixedly installed on the bottom of the output end of the servo motor, the screw rotates through the inner and outer walls of the mixing bin, a spiral rod is fixedly installed on the bottom of the screw, a mixing device for mixing raw materials and a feeding device for controlling the feeding speed of raw materials are arranged on the top of the machine tool.

[0007] According to the above technical solution, a spiral groove is provided on the circumferential surface of the screw rod, a lifting ring is slidably installed inside the spiral groove, a telescopic rod is fixedly installed on the circumferential surface of the lifting ring, a pressing rod is fixedly installed on the end of the telescopic rod away from the lifting ring, a triangular block is fixedly installed on the top of the free end of the telescopic rod, and an extrusion rod is fixedly installed on the bottom of the mixing bin. The movement of the triangular block drives the free end of the telescopic rod to reset, so that when the pressing rod moves to the bottom again, it will press the raw materials toward the bottom when it contacts the feed hopper, and the device delays reset by the telescopic rod.

[0008] According to the above technical solution, the triangular block is in contact with the extrusion rod, and the spiral rod is in contact with the inner wall of the connecting tube, and the triangular block is driven to move by the extrusion rod.

[0009] According to the above technical scheme, the mixing device includes: a circular ring, an elastic telescopic rod, a mixing rod, a closing rod, a transmission circular rod and a transmission oblique block. The circular ring is slidably installed on the inner wall of the mixing bin, one end of the elastic telescopic rod is rotatably installed on the circumferential surface of the screw rod, and the other end of the elastic telescopic rod is rotatably installed on the inner wall of the circular ring. The mixing rod is fixedly installed on the circumferential surface of the screw rod. A sliding groove is provided on the surface of the mixing rod, and the closing rod is slidably installed on the inner wall of the sliding groove. The transmission circular rod slides through the inner and outer walls of the mixing rod, and the transmission oblique block is fixedly installed on one end of the transmission circular rod away from the closing rod. A discharge port is provided on the circumferential surface of the mixing bin, and the closing rod is driven to move in a direction away from the screw rod by the No. 1 spring reset. The movement of the closing rod will block the notch on the surface of the mixing rod, so that when the mixing rod rotates, the mixed raw materials will be driven to the discharge port through the rotation and discharged through the discharge port.

[0010] According to the above technical solution, a No. 1 spring is arranged between the mixing rod and the closing rod, the transmission bevel is in contact with the circular ring, and the closing rod is driven to reset by the No. 1 spring.

[0011] According to the above technical solution, a No. 1 torsion spring is arranged between the elastic telescopic rod and the screw rod, the circular ring is in contact with the discharge port, and the No. 1 torsion spring drives the elastic telescopic rod to reset.

[0012] According to the above technical scheme, the feeding device includes: a feeding pipe, a dust cover, a material pressing circular plate, a threaded rod, a collar, an L-shaped rod, a square plate, an elastic rod and an arc-shaped rod. The feeding pipe is fixedly passed through the inner and outer walls of the top cover. The dust cover is rotatably installed on the top of the feeding pipe. The threaded rod is threadedly installed on the inner wall of the dust cover. The material pressing circular plate is fixedly installed on one end of the threaded rod close to the servo motor. The collar is slidably installed on the inner wall of the feeding pipe. The bottom of the inner wall of the collar is set as an inclined surface. The L-shaped rod is fixedly installed on the inner wall of the feeding pipe. The square plate is fixedly installed on the top of the L-shaped rod. The elastic rod is fixedly installed on the bottom of the collar. The arc-shaped rod is fixedly installed on the bottom of the collar. The movement of the arc-shaped rod will drive the elastic rod to deform and vibrate, so that the raw materials remaining in the collar flow into the interior of the mixing bin.

[0013] According to the above technical solution, a No. 2 spring is arranged between the collar and the feed pipe, and the square plate contacts the collar, and the No. 2 spring drives the collar to reset.

[0014] The present invention provides a molding device for processing plastic products, which has the following beneficial effects: (1) The invention, through the movement of the pressing rod, will contact the inner wall of the feed hopper, and squeeze the raw material toward the bottom when the raw material flows into the interior of the connecting tube, thereby preventing the raw material from being unable to effectively flow into the interior of the injection molding device due to its own light weight, reducing the probability of production accidents, and improving the stability of the device during operation. The free end of the telescopic rod is reset by the movement of the triangular block, so that when the pressing rod moves toward the bottom again, it presses the raw material toward the bottom when it contacts the feed hopper. The device delays the reset of the telescopic rod to prevent part of the raw material from being taken away from the connecting tube when the pressing rod moves toward the top, resulting in part of the raw material being unable to be processed, thereby improving the practicality of the device.

[0015] (2) In the present invention, the rotation of the mixing rod drives the various raw materials in the mixing bin to be mixed through the notches provided on its surface, so that the device can fully mix the various raw materials and prevent the production of defective products. The rotation of the mixing rod drives the mixed raw materials to the discharge port and is discharged through the discharge port, so that the raw materials have sufficient time to be mixed and transported to the inside of the feed hopper after mixing, thereby improving work efficiency.

[0016] (3) In the present invention, the rotation of the threaded rod drives the pressing circular plate to rotate toward the bottom, and the rotation of the pressing circular plate contacts the sleeve and presses the sleeve toward the bottom. After the sleeve moves, it no longer contacts the square plate, so that various raw materials can be introduced into the mixing bin through the gap at the bottom of the sleeve, so that batch production can be carried out after the quantity of raw materials is determined, thereby improving work efficiency. The rotation of the elastic telescopic rod drives the arc rod to move toward the top, and the movement of the arc rod drives the elastic rod to deform and vibrate, so that the raw materials remaining in the sleeve flow into the mixing bin, preventing processing failure caused by residual raw materials and improving the precision of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the top structure of the machine tool of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the feed hopper of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the structure enlargement of part A; Figure 5 This is a schematic diagram of the cross-sectional structure of the mixing bin of the present invention; Figure 6 It is a schematic diagram of the cross-sectional structure of the mixing rod of the present invention; Figure 7 This is a schematic diagram of the cross-sectional structure of the feed pipe of the present invention; Figure 8 It is a schematic diagram of the cross-sectional structure of the sleeve ring of the present invention.

[0018] In the figure: 1. cabinet; 2. machine tool; 3. injection molding device; 4. support frame; 51. feed hopper; 52. connecting pipe; 53. top cover; 54. servo motor; 55. screw; 56. screw rod; 57. telescopic rod; 58. press rod; 59. triangular block; 510. extrusion rod; 511. lifting ring; 61. mixing bin; 62. circular ring; 63. elastic telescopic rod; 64. mixing rod; 65. closing rod; 66. transmission circular rod; 67. transmission oblique block; 71. feed pipe; 72. dust cover; 73. press circular plate; 74. threaded rod; 75. collar; 76. L-shaped rod; 77. square plate; 78. elastic rod; 79. arc rod. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1 - Figure 7 One embodiment of the present invention is: a molding device for processing plastic products, including a cabinet 1, a machine tool 2 is arranged on the top of the cabinet 1, an injection molding device 3 is arranged inside the machine tool 2, a plurality of support frames 4 are arranged on the top of the machine tool 2, a material pressing device is arranged on the top of the machine tool 2, a feed hopper 51 is fixedly installed on the top of the plurality of support frames 4, a connecting pipe 52 is fixedly installed on the bottom of the feed hopper 51, the connecting pipe 52 is fixedly penetrated through the inner and outer walls of the machine tool 2, the feed hopper 51 is connected with the injection molding device 3 through the connecting pipe 52, a top cover 53 is fixedly installed on the top of the feed hopper 51, a mixing bin 61 is fixedly installed on the bottom of the top cover 53, a servo motor 54 is fixedly installed on the top of the top cover 53, the output end of the servo motor 54 rotates and penetrates the inner and outer walls of the top cover 53, a screw rod 55 is fixedly installed on the bottom of the output end of the servo motor 54, the screw rod 55 rotates and penetrates the inner and outer walls of the mixing bin 61, and a spiral rod 56 is fixedly installed on the bottom of the screw rod 55.

[0021] A spiral groove is arranged on the circumferential surface of the screw rod 55, and a lifting ring 511 is slidably installed inside the spiral groove. A telescopic rod 57 is fixedly installed on the circumferential surface of the lifting ring 511, and a pressing rod 58 is fixedly installed on the end of the telescopic rod 57 away from the lifting ring 511 to prevent the raw material from being unable to effectively flow into the injection molding device 3 due to its own light weight, thereby reducing the probability of production accidents and improving the stability of the device during operation. A triangular block 59 is fixedly installed on the top of the free end of the telescopic rod 57, and an extrusion rod 510 is fixedly installed on the bottom of the mixing bin 61 to prevent part of the raw material from being taken away from the connecting pipe 52 when the pressing rod 58 moves to the top, resulting in part of the raw material being unable to be processed, thereby improving the practicability of the device.

[0022] The triangular block 59 is in contact with the extrusion rod 510 , and the spiral rod 56 is in contact with the inner wall of the connecting tube 52 , and the triangular block 59 is driven to move by the extrusion rod 510 .

[0023] When the present embodiment is working: the servo motor 54 is started, and the rotation of the output end of the servo motor 54 drives the screw rod 55 to rotate, and the rotation of the screw rod 55 drives the spiral rod 56 to rotate, and the rotation of the spiral rod 56 transports the raw material inside the feed hopper 51 to the inside of the connecting tube 52, and the rotation of the screw rod 55 drives the spiral groove to rotate, and the rotation of the spiral groove drives the lifting ring 511 to reciprocate up and down, and the lifting ring 511 moves toward the bottom and drives the telescopic rod 57 to move toward the bottom, and the telescopic rod 57 moves toward the bottom and drives the pressing rod 58 to move toward the bottom, and the pressing rod 58 moves and contacts the inner wall of the feed hopper 51, and squeezes the raw material toward the bottom when the raw material flows into the inside of the connecting tube 52, so as to prevent the raw material from being unable to effectively flow into the inside of the injection molding device 3 due to its own light weight, thereby reducing the probability of production accidents. , improving the stability of the device during operation, the movement of the lifting ring 511 to the top will drive the telescopic rod 57 to move to the top, the movement of the telescopic rod 57 will drive the pressing rod 58 to move to the top, the movement of the pressing rod 58 will drive the triangular block 59 to move to the top, the movement of the triangular block 59 will contact the extrusion rod 510, the triangular block 59 is blocked by the extrusion rod 510, so that the triangular block 59 moves away from the lifting ring 511, the movement of the triangular block 59 drives the free end of the telescopic rod 57 to reset, so that when the pressing rod 58 moves to the bottom again, it will press the raw material to the bottom when it contacts the feed hopper 51, the device delays the reset through the telescopic rod 57 to prevent the pressing rod 58 from moving to the top and taking part of the raw material away from the connecting pipe 52, resulting in part of the raw material cannot be processed, thereby improving the practicality of the device.

[0024] See also Figure 1 - Figure 8 On the basis of the above embodiment, in another embodiment of the present invention, a mixing device for mixing raw materials and a feeding device for controlling the feeding speed of the raw materials are arranged on the top of the machine tool 2, wherein the mixing device comprises: a circular ring 62, an elastic telescopic rod 63, a mixing rod 64, a closing rod 65, a transmission circular rod 66 and a transmission inclined block 67, the circular ring 62 is slidably mounted on the inner wall of the mixing bin 61, one end of the elastic telescopic rod 63 is rotatably mounted on the circumferential surface of the screw rod 55, and the other end of the elastic telescopic rod 63 is rotatably mounted on the inner wall of the circular ring 62 The mixing rod 64 is fixedly mounted on the circumferential surface of the screw rod 55, a slide groove is provided on the surface of the mixing rod 64, and the closing rod 65 is slidably mounted on the inner wall of the slide groove, so that the device can fully mix various raw materials to prevent the production of defective products, the transmission round rod 66 slides through the inner and outer walls of the mixing rod 64, and the transmission bevel block 67 is fixedly mounted on the end of the transmission round rod 66 away from the closing rod 65. A discharge port is provided on the circumferential surface of the mixing bin 61, so that the raw materials have sufficient time to be mixed and transported to the inside of the feed hopper 51 after mixing, thereby improving work efficiency.

[0025] A No. 1 spring is arranged between the mixing rod 64 and the closing rod 65. The transmission bevel block 67 contacts the circular ring 62, and the closing rod 65 is driven to reset by the No. 1 spring.

[0026] A first torsion spring is arranged between the elastic telescopic rod 63 and the screw rod 55, and the ring 62 is in contact with the discharge port, and the elastic telescopic rod 63 is driven to reset by the first torsion spring.

[0027] The feeding device includes: a feeding pipe 71, a dust cover 72, a material pressing circular plate 73, a threaded rod 74, a collar 75, an L-shaped rod 76, a square plate 77, an elastic rod 78 and an arc rod 79. The feeding pipe 71 is fixedly passed through the inner and outer walls of the top cover 53, the dust cover 72 is rotatably mounted on the top of the feeding pipe 71, the threaded rod 74 is threadedly mounted on the inner wall of the dust cover 72, the material pressing circular plate 73 is fixedly mounted on one end of the threaded rod 74 close to the servo motor 54, the collar 75 is slidably mounted on the inner wall of the feeding pipe 71, the bottom of the inner wall of the collar 75 is set as an inclined surface, the L-shaped rod 76 is fixedly mounted on the inner wall of the feeding pipe 71, and the square plate 77 is fixedly mounted on the top of the L-shaped rod 76, so that batch production can be carried out after the quantity of raw materials is determined, thereby improving work efficiency, the elastic rod 78 is fixedly mounted on the bottom of the collar 75, and the arc rod 79 is fixedly mounted on the bottom of the collar 75, thereby preventing raw material residue from causing processing failure and improving the precision of the device.

[0028] A No. 2 spring is provided between the collar 75 and the feed pipe 71 , and the square plate 77 is in contact with the collar 75 , and the No. 2 spring drives the collar 75 to reset.

[0029] When the present embodiment is working, the rotation of the screw rod 55 will drive the mixing rod 64 to rotate, and the rotation of the mixing rod 64 will drive the various raw materials inside the mixing bin 61 to mix by rotation through the notch set on its surface, so that the device can fully mix various raw materials to prevent the production of defective products, the rotation of the screw rod 55 will drive the elastic telescopic rod 63 to rotate, and the rotation of the elastic telescopic rod 63 will drive the ring 62 to rotate. When the screw rod 55 reaches a sufficient rotation speed, sufficient centrifugal force will be generated to drive the elastic telescopic rod 63 to rotate toward the top, and the rotation of the elastic telescopic rod 63 will drive the ring 62 to move toward the top. After the ring 62 moves to the top, it no longer contacts the transmission inclined block 67 at the discharge port, and the closing rod 65 is driven to move away from the screw rod 55 through the No. 1 spring reset. The movement of the closing rod 65 will block the notch on the surface of the mixing rod 64, so that when the mixing rod 64 rotates, the mixed raw materials will be driven to the discharge port by rotation and discharged through the discharge port, so that the raw materials have sufficient time to be mixed and transported to the inside of the feed hopper 51 after mixing, thereby improving work efficiency.

[0030] The various required raw materials are classified and placed in the interior of each feeding pipe 71, and then the threaded rod 74 is rotated according to the required quantity. The rotation of the threaded rod 74 will drive the pressing circular plate 73 to move to the bottom, and then the dust cover 72 is closed. The rotation of the dust cover 72 will drive the threaded rod 74 to rotate. The rotation of the threaded rod 74 will drive the pressing circular plate 73 to rotate to the bottom. The pressing circular plate 73 rotates to contact the ring 75 and press the ring 75 to the bottom. After the ring 75 moves, it no longer contacts the square plate 77, so that various raw materials can be introduced into the interior of the mixing bin 61 through the notch at the bottom of the ring 75, so that batch production can be carried out after the quantity of raw materials is determined, thereby improving work efficiency. The rotation of the elastic telescopic rod 63 will contact the arc rod 79, and the rotation of the elastic telescopic rod 63 will drive the arc rod 79 to move to the top. The movement of the arc rod 79 will drive the elastic rod 78 to deform and vibrate, so that the raw materials remaining in the ring 75 flow into the interior of the mixing bin 61, thereby preventing the residual raw materials from causing processing failure and improving the precision of the device.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A molding device for processing plastic products, comprising a cabinet (1), characterized in that: A machine tool (2) is arranged on the top of the cabinet (1), an injection molding device (3) is arranged inside the machine tool (2), a plurality of support frames (4) are arranged on the top of the machine tool (2), a material pressing device is arranged on the top of the machine tool (2), a feed hopper (51) is fixedly installed on the top of the plurality of support frames (4), a connecting pipe (52) is fixedly installed on the bottom of the feed hopper (51), the connecting pipe (52) is fixedly passed through the inner and outer walls of the machine tool (2), the feed hopper (51) is connected to the injection molding device (3) via the connecting pipe (52), and a top cover (53) is fixedly installed on the top of the feed hopper (51). ), a mixing bin (61) is fixedly mounted on the bottom of the top cover (53), a servo motor (54) is fixedly mounted on the top of the top cover (53), an output end of the servo motor (54) rotates and penetrates the inner and outer walls of the top cover (53), a screw rod (55) is fixedly mounted on the bottom of the output end of the servo motor (54), the screw rod (55) rotates and penetrates the inner and outer walls of the mixing bin (61), a spiral rod (56) is fixedly mounted on the bottom of the screw rod (55), and a mixing device for mixing raw materials and a feeding device for controlling the feeding speed of the raw materials are arranged on the top of the machine tool (2).

2. A molding device for plastic product processing according to claim 1, characterized in that: The circumferential surface of the screw rod (55) is provided with a spiral groove, a lifting ring (511) is slidably mounted inside the spiral groove, a telescopic rod (57) is fixedly mounted on the circumferential surface of the lifting ring (511), a pressing rod (58) is fixedly mounted on one end of the telescopic rod (57) away from the lifting ring (511), a triangular block (59) is fixedly mounted on the top of the free end of the telescopic rod (57), and a squeezing rod (510) is fixedly mounted on the bottom of the mixing bin (61).

3. A molding device for processing plastic products according to claim 2, characterized in that: The triangular block (59) is in contact with the extrusion rod (510), and the spiral rod (56) is in contact with the inner wall of the connecting tube (52).

4. A molding device for processing plastic products according to claim 3, characterized in that: The mixing device comprises: a circular ring (62), an elastic telescopic rod (63), a mixing rod (64), a closing rod (65), a transmission circular rod (66) and a transmission inclined block (67); the circular ring (62) is slidably mounted on the inner wall of the mixing bin (61); one end of the elastic telescopic rod (63) is rotatably mounted on the circumferential surface of the screw rod (55); the other end of the elastic telescopic rod (63) is rotatably mounted on the inner wall of the circular ring (62); the mixing rod (64) is fixedly mounted on the circumferential surface of the screw rod (55); a sliding groove is provided on the surface of the mixing rod (64); the closing rod (65) is slidably mounted on the inner wall of the sliding groove; the transmission circular rod (66) slidably penetrates the inner and outer walls of the mixing rod (64); the transmission inclined block (67) is fixedly mounted on one end of the transmission circular rod (66) away from the closing rod (65); and a discharge port is provided on the circumferential surface of the mixing bin (61).

5. A molding device for processing plastic products according to claim 4, characterized in that: A No. 1 spring is provided between the mixing rod (64) and the closing rod (65), and the transmission bevel block (67) is in contact with the circular ring (62).

6. A molding device for processing plastic products according to claim 5, characterized in that: A first torsion spring is provided between the elastic telescopic rod (63) and the screw rod (55), and the circular ring (62) is in contact with the discharge port.

7. A molding device for processing plastic products according to claim 6, characterized in that: The feeding device comprises: a feeding pipe (71), a dust cover (72), a material pressing circular plate (73), a threaded rod (74), a collar (75), an L-shaped rod (76), a square plate (77), an elastic rod (78) and an arc-shaped rod (79), wherein the feeding pipe (71) is fixedly passed through the inner and outer walls of the top cover (53), the dust cover (72) is rotatably mounted on the top of the feeding pipe (71), the threaded rod (74) is threadedly mounted on the inner wall of the dust cover (72), and the material pressing circular plate (73) is The sleeve (75) is fixedly mounted on one end of the threaded rod (74) close to the servo motor (54); the sleeve (75) is slidably mounted on the inner wall of the feed pipe (71); the bottom of the inner wall of the sleeve (75) is arranged as an inclined surface; the L-shaped rod (76) is fixedly mounted on the inner wall of the feed pipe (71); the square plate (77) is fixedly mounted on the top of the L-shaped rod (76); the elastic rod (78) is fixedly mounted on the bottom of the sleeve (75); and the arc-shaped rod (79) is fixedly mounted on the bottom of the sleeve (75).

8. A molding device for processing plastic products according to claim 7, characterized in that: A No. 2 spring is provided between the collar (75) and the feed pipe (71), and the square plate (77) is in contact with the collar (75).

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